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<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1" />
    <!-- Use Chrome Frame in IE -->
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"
    />
    <meta name="description" content="Pick features in a 3D Tiles tileset." />
    <meta name="cesium-sandcastle-labels" content="Showcases, 3D Tiles" />
    <title>Cesium Demo</title>
    <script type="text/javascript" src="../Sandcastle-header.js"></script>
    <script
      type="text/javascript"
      src="../../../Build/CesiumUnminified/Cesium.js"
      nomodule
    ></script>
    <script type="module" src="../load-cesium-es6.js"></script>
  </head>
  <body
    class="sandcastle-loading"
    data-sandcastle-bucket="bucket-requirejs.html"
  >
    <style>
      @import url(../templates/bucket.css);
    </style>
    <div id="cesiumContainer" class="fullSize"></div>
    <div id="loadingOverlay"><h1>Loading...</h1></div>
    <div id="toolbar"></div>
    <script id="cesium_sandcastle_script">
      function startup(Cesium) {
        "use strict";
        //Sandcastle_Begin
        // A simple demo of 3D Tiles feature picking with hover and select behavior
        // Building data courtesy of NYC OpenData portal: http://www1.nyc.gov/site/doitt/initiatives/3d-building.page
        var viewer = new Cesium.Viewer("cesiumContainer", {
          terrainProvider: Cesium.createWorldTerrain(),
        });

        viewer.scene.globe.depthTestAgainstTerrain = true;

        // Set the initial camera view to look at Manhattan
        var initialPosition = Cesium.Cartesian3.fromDegrees(
          -74.01881302800248,
          40.69114333714821,
          753
        );
        var initialOrientation = new Cesium.HeadingPitchRoll.fromDegrees(
          21.27879878293835,
          -21.34390550872461,
          0.0716951918898415
        );
        viewer.scene.camera.setView({
          destination: initialPosition,
          orientation: initialOrientation,
          endTransform: Cesium.Matrix4.IDENTITY,
        });

        // Load the NYC buildings tileset
        var tileset = new Cesium.Cesium3DTileset({
          url: Cesium.IonResource.fromAssetId(75343),
        });
        viewer.scene.primitives.add(tileset);

        // HTML overlay for showing feature name on mouseover
        var nameOverlay = document.createElement("div");
        viewer.container.appendChild(nameOverlay);
        nameOverlay.className = "backdrop";
        nameOverlay.style.display = "none";
        nameOverlay.style.position = "absolute";
        nameOverlay.style.bottom = "0";
        nameOverlay.style.left = "0";
        nameOverlay.style["pointer-events"] = "none";
        nameOverlay.style.padding = "4px";
        nameOverlay.style.backgroundColor = "black";

        // Information about the currently selected feature
        var selected = {
          feature: undefined,
          originalColor: new Cesium.Color(),
        };

        // An entity object which will hold info about the currently selected feature for infobox display
        var selectedEntity = new Cesium.Entity();

        // Get default left click handler for when a feature is not picked on left click
        var clickHandler = viewer.screenSpaceEventHandler.getInputAction(
          Cesium.ScreenSpaceEventType.LEFT_CLICK
        );

        // If silhouettes are supported, silhouette features in blue on mouse over and silhouette green on mouse click.
        // If silhouettes are not supported, change the feature color to yellow on mouse over and green on mouse click.
        if (
          Cesium.PostProcessStageLibrary.isSilhouetteSupported(viewer.scene)
        ) {
          // Silhouettes are supported
          var silhouetteBlue = Cesium.PostProcessStageLibrary.createEdgeDetectionStage();
          silhouetteBlue.uniforms.color = Cesium.Color.BLUE;
          silhouetteBlue.uniforms.length = 0.01;
          silhouetteBlue.selected = [];

          var silhouetteGreen = Cesium.PostProcessStageLibrary.createEdgeDetectionStage();
          silhouetteGreen.uniforms.color = Cesium.Color.LIME;
          silhouetteGreen.uniforms.length = 0.01;
          silhouetteGreen.selected = [];

          viewer.scene.postProcessStages.add(
            Cesium.PostProcessStageLibrary.createSilhouetteStage([
              silhouetteBlue,
              silhouetteGreen,
            ])
          );

          // Silhouette a feature blue on hover.
          viewer.screenSpaceEventHandler.setInputAction(function onMouseMove(
            movement
          ) {
            // If a feature was previously highlighted, undo the highlight
            silhouetteBlue.selected = [];

            // Pick a new feature
            var pickedFeature = viewer.scene.pick(movement.endPosition);
            if (!Cesium.defined(pickedFeature)) {
              nameOverlay.style.display = "none";
              return;
            }

            // A feature was picked, so show it's overlay content
            nameOverlay.style.display = "block";
            nameOverlay.style.bottom =
              viewer.canvas.clientHeight - movement.endPosition.y + "px";
            nameOverlay.style.left = movement.endPosition.x + "px";
            var name = pickedFeature.getProperty("BIN");
            nameOverlay.textContent = name;

            // Highlight the feature if it's not already selected.
            if (pickedFeature !== selected.feature) {
              silhouetteBlue.selected = [pickedFeature];
            }
          },
          Cesium.ScreenSpaceEventType.MOUSE_MOVE);

          // Silhouette a feature on selection and show metadata in the InfoBox.
          viewer.screenSpaceEventHandler.setInputAction(function onLeftClick(
            movement
          ) {
            // If a feature was previously selected, undo the highlight
            silhouetteGreen.selected = [];

            // Pick a new feature
            var pickedFeature = viewer.scene.pick(movement.position);
            if (!Cesium.defined(pickedFeature)) {
              clickHandler(movement);
              return;
            }

            // Select the feature if it's not already selected
            if (silhouetteGreen.selected[0] === pickedFeature) {
              return;
            }

            // Save the selected feature's original color
            var highlightedFeature = silhouetteBlue.selected[0];
            if (pickedFeature === highlightedFeature) {
              silhouetteBlue.selected = [];
            }

            // Highlight newly selected feature
            silhouetteGreen.selected = [pickedFeature];

            // Set feature infobox description
            var featureName = pickedFeature.getProperty("name");
            selectedEntity.name = featureName;
            selectedEntity.description =
              'Loading <div class="cesium-infoBox-loading"></div>';
            viewer.selectedEntity = selectedEntity;
            selectedEntity.description =
              '<table class="cesium-infoBox-defaultTable"><tbody>' +
              "<tr><th>BIN</th><td>" +
              pickedFeature.getProperty("BIN") +
              "</td></tr>" +
              "<tr><th>DOITT ID</th><td>" +
              pickedFeature.getProperty("DOITT_ID") +
              "</td></tr>" +
              "<tr><th>SOURCE ID</th><td>" +
              pickedFeature.getProperty("SOURCE_ID") +
              "</td></tr>" +
              "</tbody></table>";
          },
          Cesium.ScreenSpaceEventType.LEFT_CLICK);
        } else {
          // Silhouettes are not supported. Instead, change the feature color.

          // Information about the currently highlighted feature
          var highlighted = {
            feature: undefined,
            originalColor: new Cesium.Color(),
          };

          // Color a feature yellow on hover.
          viewer.screenSpaceEventHandler.setInputAction(function onMouseMove(
            movement
          ) {
            // If a feature was previously highlighted, undo the highlight
            if (Cesium.defined(highlighted.feature)) {
              highlighted.feature.color = highlighted.originalColor;
              highlighted.feature = undefined;
            }
            // Pick a new feature
            var pickedFeature = viewer.scene.pick(movement.endPosition);
            if (!Cesium.defined(pickedFeature)) {
              nameOverlay.style.display = "none";
              return;
            }
            // A feature was picked, so show it's overlay content
            nameOverlay.style.display = "block";
            nameOverlay.style.bottom =
              viewer.canvas.clientHeight - movement.endPosition.y + "px";
            nameOverlay.style.left = movement.endPosition.x + "px";
            var name = pickedFeature.getProperty("name");
            if (!Cesium.defined(name)) {
              name = pickedFeature.getProperty("id");
            }
            nameOverlay.textContent = name;
            // Highlight the feature if it's not already selected.
            if (pickedFeature !== selected.feature) {
              highlighted.feature = pickedFeature;
              Cesium.Color.clone(
                pickedFeature.color,
                highlighted.originalColor
              );
              pickedFeature.color = Cesium.Color.YELLOW;
            }
          },
          Cesium.ScreenSpaceEventType.MOUSE_MOVE);

          // Color a feature on selection and show metadata in the InfoBox.
          viewer.screenSpaceEventHandler.setInputAction(function onLeftClick(
            movement
          ) {
            // If a feature was previously selected, undo the highlight
            if (Cesium.defined(selected.feature)) {
              selected.feature.color = selected.originalColor;
              selected.feature = undefined;
            }
            // Pick a new feature
            var pickedFeature = viewer.scene.pick(movement.position);
            if (!Cesium.defined(pickedFeature)) {
              clickHandler(movement);
              return;
            }
            // Select the feature if it's not already selected
            if (selected.feature === pickedFeature) {
              return;
            }
            selected.feature = pickedFeature;
            // Save the selected feature's original color
            if (pickedFeature === highlighted.feature) {
              Cesium.Color.clone(
                highlighted.originalColor,
                selected.originalColor
              );
              highlighted.feature = undefined;
            } else {
              Cesium.Color.clone(pickedFeature.color, selected.originalColor);
            }
            // Highlight newly selected feature
            pickedFeature.color = Cesium.Color.LIME;
            // Set feature infobox description
            var featureName = pickedFeature.getProperty("name");
            selectedEntity.name = featureName;
            selectedEntity.description =
              'Loading <div class="cesium-infoBox-loading"></div>';
            viewer.selectedEntity = selectedEntity;
            selectedEntity.description =
              '<table class="cesium-infoBox-defaultTable"><tbody>' +
              "<tr><th>BIN</th><td>" +
              pickedFeature.getProperty("BIN") +
              "</td></tr>" +
              "<tr><th>DOITT ID</th><td>" +
              pickedFeature.getProperty("DOITT_ID") +
              "</td></tr>" +
              "<tr><th>SOURCE ID</th><td>" +
              pickedFeature.getProperty("SOURCE_ID") +
              "</td></tr>" +
              "<tr><th>Longitude</th><td>" +
              pickedFeature.getProperty("longitude") +
              "</td></tr>" +
              "<tr><th>Latitude</th><td>" +
              pickedFeature.getProperty("latitude") +
              "</td></tr>" +
              "<tr><th>Height</th><td>" +
              pickedFeature.getProperty("height") +
              "</td></tr>" +
              "<tr><th>Terrain Height (Ellipsoid)</th><td>" +
              pickedFeature.getProperty("TerrainHeight") +
              "</td></tr>" +
              "</tbody></table>";
          },
          Cesium.ScreenSpaceEventType.LEFT_CLICK);
        }

        //Sandcastle_End
        Sandcastle.finishedLoading();
      }
      if (typeof Cesium !== "undefined") {
        window.startupCalled = true;
        startup(Cesium);
      }
    </script>
  </body>
</html>
